2550009 has 48 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 1239840.

The previous prime is 2550001. The next prime is 2550013. The reversal of 2550009 is 9000552.

It is not a de Polignac number, because 2550009 - 2³ = 2550001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2550001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30682 + ... + 30764.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^2550009 is an apocalyptic number.

It is an amenable number.

2550009 is a deficient number, since it is larger than the sum of its proper divisors (2046471).

2550009 is a wasteful number, since it uses less digits than its factorization.

2550009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 2550009 is about 1596.8747602740. The cubic root of 2550009 is about 136.6198815336.

The spelling of 2550009 in words is "two million, five hundred fifty thousand, nine".